The game is based on the Japan-only Shindou version which include Mario's infamous "So long, King Bowser!" (frequently misinterpreted as "So long, gay Bowser!") being replaced with "Bye-bye!", his two higher-pitched voice clips, and the rumble support (for this case, HD rumble).
The title screen has the "Press +" instead of the "Press Start" text.
In addition, Mario's signature "M" emblem on his cap has been modified to clearly resemble its present look as in other games.
Much of the elements, including the background elements such as trees, coins, the HUD, Mario's facial details, and overalls buttons, maintain faithful while now presented much more clearly than pixelated.
In both docked and handheld modes, the game has a maximum resolution of 960 x 720.
The game maintains the original 4:3 aspect ratio, but with improved image quality.
Each game has their unique features, mechanics, controls, compatibility, functions, and picture displays.
Text and dialogues have been changed and altered from the original versions to match the Switch controls and remove original console-exclusive content.
There is a mode where players can listen to entire soundtracks of all the three games.
The games have been optimized for an improved performance on the Nintendo Switch.
All the three games have improved higher resolution image qualities up to 1920 x 1080 (docked), except for Super Mario 64 (see below).
All the three games use the Joy-Con and Nintendo Switch Pro Controller in all available modes, with HD Rumble support.